ASTROSAT CZTI

Data Quality Report

Orbit 19000

Creation date: 2024-06-27T17:57:54.422238
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A06_003T05_9000002830_19000cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19000cztM0_level2_quad_clean.evt
Size (bytes)603,351,36087,776,640
Size575.4 MB 83.7 MB
Events in quadrant A6,807,743527,807
Events in quadrant B3,529,966577,864
Events in quadrant C3,149,635556,407
Events in quadrant D4,339,808537,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245882
B0146202
C0136812
D0176862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6568166525.350183%
B6568991.507308%
C6568480.730816%
D65681462.222899%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7563 6568 1179 1179 15.59% 17.95%
B 7563 6569 24 24 0.32% 0.37%
C 7563 6569 0 0 0.00% 0.00%
D 7563 6569 60 60 0.79% 0.91%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 4186812 30693.72 677 663 136.4
A 9 143 10798 74.31 677 663 136.4
A 0 226 5936 38.66 677 663 136.4
B 3 112 317760 2090.45 786 765 151.6
B 0 197 51930 337.41 786 765 151.6
B 0 190 31213 200.79 786 765 151.6
C 14 238 119071 666.19 759 766 177.6
C 9 54 36143 199.21 759 766 177.6
C 3 233 30633 168.19 759 766 177.6
D 7 238 1311701 7013.49 763 741 186.9
D 1 52 110653 588.02 763 741 186.9
D 2 234 28120 146.47 763 741 186.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter